ORC - Systems

They
can be used wherever large amounts of heat incur on a temperature level >60°C, e.g.:

Industry: generating electricity by
recovering process
heat
from
various
industries

Bioenergy: power production
based
on biomass cogeneration
plants,
gas turbines, combined
heat
and
power plants, waste
or sludge
incinerating
plants

Geothermal energy:
converting
geothermal energy
into electric
energy

Solar thermal power: solar energy
based electricity
generation

Functional Principle – Circulating From Waste Heat to Electricity

The
ORC–process
is
a thermodynamic
cycle
that
uses
organic
fluids
like isopentane, isooctane, toluene
or silicon
oil
as
working
medium.
At
low
temperatures
and
pressures
these working
fluids have better thermodynamical
properties than water.

The
ORC-medium is heated
up
and evaporated
by
a low-temperature
heat
source
inside the evaporator ①.
The
evaporated
working fluid entering the steam
turbine
is driving the generator generating electricity ②.

The
vapor
exiting
the
turbine
is
reliquified
inside
the condenser
③. Closing
the
cylce
the
fluid is
fed
back into
process
by a feeding
pump ④.